Home / 5,147.18-7,101.17-3,129.98

Finding the Fourth Proportional to 5,147.18, 7,101.17 and 3,129.98

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Solution

The fourth proportional to 5,147.18, 7,101.17 and 3,129.98 is: 4,318.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.18 : 7,101.17 = 3,129.98 : x
  2. Step 2: Convert to fraction form
    5,147.18/7,101.17 = 3,129.98/x
  3. Step 3: Cross multiply
    5,147.18x = 7,101.17 × 3,129.98
  4. Step 4: Simplify right side
    5,147.18x = 22,226,468.92
  5. Step 5: Solve for x
    x = 22,226,468.92/5,147.18
  6. Step 6: Final answer
    x = 4,318.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.